john mcafee is a guy who has been through a lot. i first got to know him, he was just a larger than life, charismatic character. famous, wealthy. the world was really his oyster, and in the five years that i've known him, he's followed a downward trajectory. >> because? >> well, because -- i think because he has some dark aspects to his character, and in a sense, being able to do whatever you want can be a curse at times. >> you say when you recently visited him that you were concerned about your own safety. why? >> well, i was. because i talked to people who had been intimate, who had been very close to him. and many of them had left his property -- had left his entourage and told me that they were frightened for their lives, even back in the united states. so thousands of miles away from him, they were still worried that somehow he could reach out and harm them. >> what do you think he's capable of doing? >> i don't really know what he's capable of doing. he's a very strange man. he's one of these people who the more i've gotten t